Free Sound Design Tool For The Mac, pMix, Now Available

Free Music Software: Developer Oli Larkin has released pMix (Mac App Store link), a free sound design tool for Mac OS X that allows you to morph between VST plugin presets using an intuitive graphical interface.

  • Presets are represented by coloured balls that are positioned on a 2D plane. The size of each ball and its proximity to the cursor affects the weight of the associated preset in the interpolation.
  • Morphing between presets often results in the discovery of interesting hybrid sounds. By constraining sound manipulations within a predesigned “interpolation space” complex transitions can be achieved that would otherwise be hard to manage.
  • pMix can load four VST2 audio plugins. It comes with a suite of specially designed plugins which cover a range of experimental DSP techniques (noise generators, FM synthesis, formant filtering, frequency shifting etc). These plugins can also be used in other VST host applications.


  • Realtime VST2 plug-in chainer.
  • Live processing of audio input, file playback or instrument plug-ins.
  • Unique multi-layered interpolation approach.
  • Rich visual control interface with real-time feedback.
  • Includes a suite of 9 high-quality audio FX and generators.
  • Many options for randomisation.
  • Break-point function and “freehand” automation modes.
  • Audio file player & recorder built in.
  • Controllable via OSC and MIDI.
  • Can be used with other applications via Rewire or Soundflower.
  • Changes from v0.7 (released in 2008):
  • Redesigned interface.
  • Supports instrument plug-ins.
  • Supports tempo synchronisation.
  • Now includes a suite of specially designed plug-ins.

If you give pMix a try, let us know what you think of it!

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